Sheet cutting machine



May 9, 1933. w. EGGER SHEET CUTTING MACHINE Filed Deo. 13, 1930 5 Sheets-Sheet l INVENTOR ATTORNEY May 9, 1933. W. EGGER 1,907,760

`SHEET CUTTING MACHINE Filed Deo. 13, 1930 5 Sheets-Sheet 2 ATTORNEY May 9, 1933. W. EGGER 1,907,760

SHEET CUTTING MACHINE Filed Dec. l5', 1930 5 SheeLs-Sheet 3 ATTORNEY May 9, 1933.

W. EGGER SHEET CUTTING MACHINE Filed Dec. l5, 1930 5 Sheets-Sheet 4 ,JZZ/

'ATTORNEY May 9, 1933 W. EGGER 1,907,760

'SHEET CUTTING MACHINE Filed DSC. l5, 1930 5 Sheets-Sheet 5 ATTORNEY Patented May 9, 1933 WALTER EGGER F CLEVELND, OHM), SSIGNR, BY MESNE ASSIGNMENTS, TO DU PNT CELLOPHANE OMPN'Y, INC., F NEW YGRK, N. YQ, A CORPGRATIGN 02E' SHEET CUTTING MACHINE Application iled December 18, 1930. Serial Ho. 502,040.

This invention relates to a cutting machine and more particularly to a machinefor severing sheet-'like material.

ln the Severin of sheet-like material, such as sheets or lms of regenerated cellu lose there is a tendency for this material to follow the motion of the knife and become entangled in the machine without being severed. The present invention accordingly pro vides means for gripping those portions of the thin-sheet-like material adjacent the lield of action of the cuttingmeans whereby cleancut severance of said material is more easily effected.

l The invention further provides means for l automatically disposing of the severed sheets outside the field of action of the machine so as torender them available for use.

The invention also consists in certain new and origina-l features of construction and combmations of` parts hereinafter setforth and claimed.

This application is directed to subject matter similar to that described and disclosed in copending application Serial No. .467,412, filed July 12, 1930.'

Althoughfthe novel features which arefbelieved to be characteristic of Athis invention will be particularly pointed out inthe claims appended hereto, the invention itself, as to its objects and advantages, the mode of its operation and the manner of its organization may be better understood by referring to the following description taken in connection i with the accompanying drawings forming a part thereof, in which:

Figure l is a side elevation partly in section of the assembled machine.

Figure 2 is a front elevation partly in section of the assembled machine.

Figure 3 is a sectionalplan taken on line 3 3 ofFigure 2 showing the cutters in open position. i

Figure 4 is a section taken on line 4 4 of Figure 3. l

Figure 5 is a partial section taken on line Figure 6 is a section taken on line 6 6 of Figure 5. Y

- grooved members 16 and 17A which Figure 7 is a detail view of the adjusting crank unit shown in Figures 1 and 2.

Figure 8 isa section taken on line 8 8 of Figure 1, and

Figure 9 is a perspective showing one element of the brake unit adapted to cooperate with the web roll. i

Like reference characters denote like parts in the several figures of the drawings.

In the following .description and in the claims parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

`.The accompanying drawings show a concrete exemplilication of the present invention and designate a table 10 (Figures 1 and 2) supported by legs 1l and surmounted by a cutting machine unit 12. The cutting machine comprises two side frame pieces 13 and 14 having the bottom portions thereof joined by a base plate 15 which rests on the table he upper portions of the frame pieces 13 and 14 are provided with circularly bearing blocks-for a. spindle 20. The bearing block 16 is provided with a bore 21 for the reception therein of a spring 22. This spring extends -beyond the top surface of the member 16, as shown in Figure 1, and cooperates with an arm 23, one end of which is pivotally mounted to a bracket 24 secured to the edge of the frame piece 13. The other end of the arm 23 termina-tes in a bearing block 25 which serves as a companion piece for the bearing member 16.

The spindle 20 is provided on each end thereof with knurled knobs 26 (Figure 2) for This s indle has also secured thereto a fixed hub 2 and a slidable hub 30, the-position of ,which'can be selectively adjusted along said spindle through the agency of an angu- Aferred to, there is provided a-feeding unitn designated generally by the numeral 34; This unit comprises a roller 35 journaled to the auxiliary frame pieces 36, these frame pieces being secured to the frame pieces 13 and 14 respectively and being provided with rectangular; slots 37, one end of each slot yhav- .with the gear 43.

ing fixed therein bearing blocks 38 (Figure 4) Proximate the other end of the slots 37 are slidably mounted bearing blocks 40.

Journaled in the bearing blocks 38is a shaft 41 which has aflixed thereto a roller 42. Thisshaft 41 extends outside one of the auxiliary frame pieces 36 and has secured to the extended portion thereof gears 43 "and 44, as shown in detail inFigure 5. -The bearing blocks 40 have journaled therein a shaft 45, one end of which extends beyond one of the frame pieces .36. The extended portion of the shaft 45 carries a gear 46 which meshes Also mounted lon the shaft 45 in equally spaced intervals are a plurality of sleeve members 47 which are pinned to this shaft and which have mounted thereon roller sheathsl 48. These roller sheaths are preferably made `of rubber or other yieldable material and have contacting engagement with the roller 42.

The pressure between the rollers 42l and 48 can be selectively adjusted through the agency of a coil spring 50 (Figures 1 and 5) which is disposed in a housing 51 and'which has one end thereof impinging on the bearing blocks 40. The other end of the coil spring cooperates With a plate l52, the position of which is selectively adjusted by means of a thumb screw 53. A similar arrangement (not shown) is disposed on the other end of the shaft 45. 1

In order to eect the rotation of the rollers V42 and 48 in they direction for feed-ing the web 33 into thefield of action of the cutters, there is provided /a main source of power .which may take the form of the motor 54 (Figures 1 and 2). vThe shaft of this motor is provided with a pinion 55 Which meshes with a spur gear- 56. This gear 56 is mounted on a shaft 57 which is journaled in the bearin brackets 58. l

ecured to the face of the gear 56 is an adjustable crank unit 60, detailsvof 'which are shovvn'in Figure 7. This unit consists of a member 61 having a T-slot 62 extending longitudinally thereof. The -base of the slot 62 has slidably mounted therealong a block 63 which has a. threaded engagement with a spindle 64. Mounted on one end of .the member 61 is a plate 65 which is provided lengths, as will be made apparent hereafter. By meansl of this arrangement, the position of thev block 63 in the slot 62 can be selectively adjusted "in response to the rotation ofthe knob 66. i v

Pivotally mounted on the block 63 is one end of a pitman 7() (Figures .1 and .2), the other end of Which is pivotally mounted to a suitably uided rack member 71. This rack member 71 meshes With a gear 72 fixedly mounted on a shaft 73. This shaft 73 has disposed proximate one end thereof a brakev unit designated generally by the numeral 74 (Figures v5 and 6). The purpose ofthe brake.

unit is to effect the rotation of the rollers 42 and 48 in a feeding direction only as will j be made apparent.

The brake unit 74 consists of a gear 75 which is loosely mounted on the shaft 73 and which meshes With the gear 44. This gear 75 is fixedly secured to a sleeve 76 by means of press-fitted pins 77. This sleeve 76 is pro-` vided `with a reduced portion78 having a disposed in said recesses 83. Embracing the outside ofthe collar 581 is a ianged sleeve 87 which is secured to the sleeve 76 by means of screws 88. The outer periphery of this anged sleeve 87 is embraced by a brake band 90, which is provided with a suitable brake lining 91 and which is secured to the frame structure of the machine by means of an integral strap 92 secured to the frame structure of the machine, as shown in Figure 1.

-0n the downstroke of the rack 71 inthe i operation of the brake unit 74, the gear 72 is rotated in a counterclockwise rotation, as seen in-Figure 6. This effects a corresponding counterclockwise rotation of the collar 81. As the collar 81 rotates in this direction the rollers 86 become jammed in the apex ,93 of the recesses 83. This causes the rotation of andl a corresponding rotation of the flanged sleeve 87 and the gear 75. vThe rotation of the gear75 is transmitted to the'intermeshed gear 44 Whicheii'ects' the rotation of the rollers 42 and 48 through the agency of the intermeshed gears 43 and 46. .In this manner the rollers 42 and 48y are turned in a direction to permit the feeding of the web 33 therethrough.

Upon the up stroke of the rack 71, the collar 81 isrotated in a clockwise direction, as seen in Figure 6. Under these conditions the rollers 86 Will be urged into cooperative engagement With the springs 85 which serve to the sleeve 76 in a countercl'ockwise rotation j' videdjwith bores 117 f dampen to v a Certain extent any tendency for rot'atin'g the sleeve 76 in a clockwise direction. i The''ten'dency for the sleeve- 7 to. rotate in thisjdirectionfis `further counteracted bythe iesistanclefb'fthe brakegbandlQO on thefl'anged tsleev'e 87", so"that the Af jear remainsstai i1aryl It should' be' noted tha-t means -bfthis tirrngement theli'oller's 42l and :48'i`vvill obviiatinig" th e3 fouling 'y of lthev web during ciltti"ngp'eridds"4 1 ."1 'I For the purposepf severing-' theweb a cutt'iig' unit 9,4 is providefd'vcomprisinlg a'knife Illiolderf95(Figures 3,4 5) which fixed toftliefframe' strlCture'ofthe machine. 1 IThis "khifeholder 95l has'ahorizontally extending "ledigefgrl'on the top'urfacejofwhich secured by means of screws'.97,. acutting knife QB'IiGodfieratingvith this knifec 98is acoman tn'lntif'e 100 'which'isse'cured to 'a movn'abie knife' holder 101"byiineans of screws 5102.

-re'ifiiovi'ded at one end thereof with extending portions 1Ofhav'ingv arcuated contacting flsiir'fac'es which serve to facilitateithe sliding '"ebetinlo'tliestwo knives.. "i the surpasse, 'ffinternuu-,enuy guiding E''thre knife 100 tinto; 5co'operative lrelationship witlifithe )knife 98, 'the shaft 57 has secured 'ft' lfnefendthereof ab'o'x'cam 104y having a "transversepiiiflOwhich has a threaded en- "gagiement with' saidbox 'c'a'm and which, is ec- 'oent-ieallymounted with respect to the" shaft ff5'lr'i1and '2)'. 'Y'.lhis',y [jin ',105 `extends :has 'j rno'uri'te'd' thereon ione, end of a@ Franklin@ .106, the other 'end fof whieh is uivotal'lv'mmmtedw one end of a' connectqo'fifnfgi rod 10,7.'The oth'erfend ofthe connectinq-roldlO? is.l pinned'toa `'rock' shaft 108 vwhich is' suitably journaled'4 in the 'frame 'striitur'e of'th'e'. machine Figures 1. 2 and l*Pinr'edto theretk 'shaftlQS'a-re two yokes 110`alnd111'having forked 'elements 112 which embrace arod 113. Thezends offthis ir'od"1'13: are 'Hattened vand have secured theretdby' means of bolts 114 two rn'ai'idrels4 1.15 `and 116.4 lThe fixed'knife 'holder95 is proy to permit the passage therethroughfof these mandrels 115 and 116, the ends"of' which. pass through b`ores118 in thel movable knife'holder 101. These 'mandrels 115 'and`116 are fixed to the knife holder 101` by means of set-screws 109. VThrough the instrumentality of this arrangement, the 'rotation of the box cam 104 causes the shaft 108 to"rock 'between definite limits causing` 'tionofthe yokes ,110 and 111. The oscilla- 'tionfof these yokes 110 and`111 is imparted to the mandrels 115 and 116 which eii'ect jthclreby reciprocating, Imovement of the niovable knife 100 in and out of cooperative relationship with its companion knife 98..

'i In order to elfecta more intimate contact between-'thermes 9s and 1100 during-their cutting action; retiactilesprings' 120 are Sprovided. :Thesesp'rings aresecur'ed fat one end thereof-to "screws1121whicharethreaded into thereof .the're l-is Aprovide'd ade 'plate 122. This vplate) l122 is fastened to "a i bracket 123 secured 'i to the frame structure of v the -ma 'l chine-and filas its' mpg tege-positioned adja- "8 "cent the peribhery'yof "the roller :32,asshown `in F igure4. LThere are lpovidedprximate the' bottom edge? lof lthe plate 122 g@ups v124 which receive one set of ends of springs;*4125,,l the och-erf Set '-'f which @operates with2 the l yknife holder 95'.'l These springs12'5arejfguidtfThf dutti'ngjedfge 1'of the knives 198 an'dl'lOO ed 'in place through theage'ny flspindles'-126 with l'the' yplate s'122' 'as alguidej-'frnean's o'r' -the l"'Welo`33 duringitspassage tothe field-effac-4 tionofthe cutting means 'but al's' serves as an 'element of the gtippi'ngineans during'cut-ting periods.- 1 During the 'cuttingstroke`, the gripping plate"1'27 willl move int-ofthe position indicated inl Figure 4,l causingtherebyi thje 'flexing of the "plate 1225 under the'l-action of the springs 125 4intofthe`positin'designated by the letter B, It should'benotedf that "duringfthe cutting action the' webisbeing firmly held against any possible entanglement in the machine."

` Under 'certain conditions 'it Vmay' be lnecessary to grip ithe'lw'ebf33 belowthe field of 'action of the'kni'ves 98 and 100 in order to effect a clean-cut-'severance. 'For this pur-y. pp ose, the knife holders 495l 'and 101 are provided Wi'th'members130 and131,'respectively, Ato which are secured by any suitable'rne'ans gripping members'132. "Thesefgripping members arev made of rubber or any :other yieldablefmaterial. "It should be'noted' that the gripping members A132 arenot absolutelynecessary and can be eliminated if desired.

' In'order tov providemeans for counteracting the inertial tendency' of the roller'32 to continue -to rotate after the feed rollers l' 42 and 48 have ceased their feeding functions,

l. f the bearing block hasicooperating therethereby 'the-corresponding angular oscillawith a brakedevic'e designated generally by 'the numeral 13,3.` 'Thisvbrake device com- ;prises a'bracket134I which is securedito "the -side of theframe piece 13 and which' has a bearing 'A block 1 135 associated" therewith.

"im iterminftes Zin (the globularenlargement 144,

seo

:havingo bore 145ftherethrough forthe recepti'onof-a rod 2146. This -rod ..146 hasanran-gular fzoffsetoasshovvn iinlligure- 1., and =h.asthe lower .en d thereofsecured to the-topend of the rack gear 71. Secured-.totherod146 are .two-.stop

gmembersf147 and .-148,' .each .of `which is -ar- .-rangedtoooperate With.the 4globular len- Llarge1nent'144-at' the end- .ot .theistrokesfof- Vthe .rack gealr.7l. Y y

,Inl-thefoperation offthis brake device 133, atftlieiendof the downward stroke of theraok amenibel.' ,71,'ithe stop .member .147 will engage ,f ,thefglobuljar enlargement .144tand rotate the fshja-ft1136 ia. clockwise direction, .as seen. in

;means ,fof fitsreceentric arrangement with respeotftosaidf shatt :136, kto bear :down-onf the .bea-ning bleak .25 against :the .action of .the spring22. .This operation serves .to hold the froller324 .against continued y rotational move- .;ment while thef rack-'11 is moving. in yan up- Ward direetion..lt should be noted thatdur- Ving-.this upward ymovement off-this rack?? 1, ,fthefrollersfiand .48 V-are not functioning, so -qthatftny; continued movement. of `said `:roller 32, du1=ing this particular lperiod., -Willtend to zaiouhthevveb'f. v IWhenfthe rack 71 has reached theend of its *..apward .stroke,-.the member148 will engage the globular enlargement 144 .and .rotate the shaft ,1364.11 az countercloc-kwise direction, as #seenin Figurel- Thismovementwill .relieve the @pressure liof .the projection 140 on the 4 bearing 25,and .renderthe roller 32 free=to rotate, .so ithatV on the .subsequent downward -strokeofthe Tack .7L-the Web can be fed between -the rollers 42 vand l48.

In -order `todisposel the severed sheets of .the web ioutside the ffieldbfraction of .the .machine 4to renderithein 4available for use, theire'is p'l'ovideda depositingalnit designated generally iby the .numeral 150 (Figures 1 and vThis -unit. consists of ,the vbox cam 1104 v havingfa cam .groove 151'i-n which is co- -operatively mounted a cam roller 152. This cam .roller ispi'votally mounted to= one. end .eta lever 153, `the other` end of which is securedto a` suitably ljournaled vrock shaft 154. .Pinned ltothisrock shaft 154 arethe endso'f-a pair fof .levers 155, theother ends ofwhi-ch/:arefpivotally mounted to :one set of ends .of connecting links 156. 'The Vother .set o'ends of these .connecting links 156 are pivoted to .crank arms 157 which are secured 4 .to'the ends of ,a `rook shaft158 journaledin brackets .160. .Fixedly secured .to :this shaft .158 [by any .suitable inea-ns isr ra .,pluralityr.0f rod-like ele1nents161 which are positioned along said .shaftat .equal lintervals, .interinediateportions ofsaid elements 161. .are held together` by means of airod162 passing througl1` spacing nipples .163 and having the fendsthereof threaded for the .receptioniof bolts :164. .These elements 16.1, duringftheir ,no1-mal )inactive periods,.rest a.gaif11sta,.ri1bber roller 165 secured to the framepieces '(13 and 14'ofrthe machine. Q n;

Extending .between .the fname ,piecesl :and 14,'isf a bar 166 (FiguresLl-andgll'glillepending from said bar ..1626 .is a plurality. of substantially rigid AWires 167fthe lower portions o'f 'which are ,positioned aentthe rubber .roller 165. 4 y

Secured, tothe legs 11. are

.168 in which ,is yjournaled the roller .110 ,for

oneend et the rod-like elements 161;.is`a clamp `17,2 Iwhieh.serves as a detent 'to the downward nioiementfof (the, severed '.shee'ts. l

unit 150, as soon as .the .W'elo l1as'been.out7 the severed sheets -gravitate."1lon.gf.the .wires 1G? and f the f .elements 161 the :edges of said .sheets,neaohmheiclampw172 The .various unitsoffthe machineare -so coordinated that, .as soonas lthese-sheets reaoh the clamp 172,the yelements .161 areangularly .displaced .linto .a horizontal ,positionsaasto deposit the severedfsheets fonthe endless conveyer -belt 151.A Tlieelements 161 ,work

lmore facile .and effective-.means .of.deposit l in-g the severed. sheets onfthe conveyor 171. Upon a clockwise rotation of the .elements 161, .as-seen in Eigure l, .the air will create suiiicient pressureto elect: cohesion between the contacting surfaces. of the sheets and the elements 161. Uponthe retrograde movement of the elements 161,. the sheetswill tend toadhere to these elements. By providing a smaller. contaoting surface .betweenrthe sheets and the elements 161, this .defect wWil'l be obviated.

In startingthe machinethe roll of Weblile material is placed on .the spindle and locked therein by means of hub members .2T `and .30. The Vweb 33 is then passedfover the roller 35 and between the feed rollers 42 and 48. The web is guided in its downward movement between the plates 122 and 127 and into the field of action of the knives 98 and 100. The adjusting crank unit 60 is then regulated in response to the rotation of the knob 66 to effect any selective stroke in the rack 71. This stroke determines the length of the sheet to be severed.

As the gear 56 rotates in the direction shown in Figure 1, the rack in its downward stroke effects the rotation of the feed rollers 42 and 48 in a direction indicated in said figure. This causes the web 33 to be fed between the plates 122 and 127 and into the field of action of the knives 98 and 100. The length of the web 33 passing through the rollers 42 and 48 is determined in accordance with the adjustment of the crank unit 60, as already described.

The various units of the machine are so coordinated that by the time the rack 71 has reached the bottom of the stroke, the knife 100 has already started to move into cooperative shearing relationship with the This movement of the knife 100 is effected through the rotation of the box cam 104 on which is mounted the transverse pin 105. The rotary movement of this transverse pin 105 is transmitted to the shaft 108 through the instrumentality of the crank lever 106 and the connecting rod 107 so as to effect a rocking movement of the shaft 108. This rocking movement of the shaft 108 is in turn imparted to the rod 113 by means of the yokes 110 and 111, so that the mandrels and 116 are correspondingly reciprocated. Inasmuch as these mandrels carry the movable knife holder 101 at their ends, their reciprocating movement effects the corresponding movement of the knife 100.

`When the rack has reached its lowest position, the brake device 133 serves to counteract the inertial tendency of the roller 32 to continue its rotation. Inasmuch as the feed rollers 42 and 48 are stationary during this particular step in the operation of the machine, such continued movement of the roller 32 would be highly undesirable. When the rack 71 has reached the bottom of its downward stroke, the gripping plate 127 and one of the gripping members 132 move fo hold the web so that a slight continued movement of the knife 100 severs said web. This severance of the web 33 is effected during the upward stroke of the rack 71. During this upward movement, the brake unit 74 functions to idle the gear 75. This effects a resultant inactiveness in the feed rollers 42 and 48. During the continued upward movement of the rack 71 after the knife 100 has severed the sheet, this knife is retracted, releasing the gripping elements and permit-- tingfthe ysevered sheet to gravitate along the elements 161, as lalready described.

As soon 'as the'bott'im of the severed sheet comes-'in Contact with theclamp 172, the elements 161'j 's t'a'rtin their angular movement to deposit'said'sheet'onthe conveyer 1711 'This' angular' finovement lof the'elements 161'is effected'through 'the agency ofthe boX cam" ,with itsjco'ope'rating 'rpller 152.V These" 104 elements y"161" work'rapidly so; that ,the air caught against',` they sheet: iholds it; 'They re-A turn!l just as rapidly so' thatthe sheet loncel deposited' willf not'be'caught up in the yvacuumbreatedf."

i While' certain ",nove'llfeatu'res of the' invei1 tioi'i have 1 beenZ 'shown' fandl "described i and are pointed out' infltheannex'ed claims,l it'will" be understood that various omissions',I substitutions' and changes in *thel forms fanddetails of the device lillustrated andin its' operatonmayf be 'made' by"those skilled ,in the artwwithou't 'departing' from thespirit invention'. v"

I claim: y f v1*.9'In a device of the classfde'scribed, the corirbination `comprising' means sheets,

means fori feeding said'sheets towards yieldably mounted f 'means disposed "on "one side ofthe sheetfserlvin'g'as an elementof a guide for said slieet `in `itslpassage towards'the fieldr'of action'of vsaid severing means, and a reciprocating member'dispo'sd on the other side. of said 'shee't an'd i vals' with saidyieldably' mounted -mea'ns' for thepurpose,of-grippingffsaid?sheet." 'f` 2; In-af'device''ofthe'fclass described, thel combinationcomprising a first means for-sev# for severing' cooperating at inter- -v ering thin sheet-'like' materiaha secondAE means means for the-purpose of gripping said sheet. f

3. In a device of the class described, the combination vcomprising'f'means for severing thin sheet-likevmateri'alg'ineans for feedin said material towards thefield 'of vaction o said. severing means, yieldably mounted means serving as aguide for one side of the material in itspassage towards the field of action of said severing means, fixed means serving as companion guiding means to said yieldably mounted means and cooperating with the other side of said material, and a reciprocating member cooperating at intervals with said yieldably mounted means for the purpose of gripping said material.

4. In a device for severing thin sheet-like material, the combination comprising a spinmeans'for said material in its pasizo 5a With said Aspindle to exert a braking effect and 3-.91 a. rackfmember carryingv twospaced abut` dlemounted. for. carrying. a rollof the sheetlilre material,.means for. intermittently feeding fa. predetermined length of t said material,

a rack member, means-forreciprocating said racl'cwithin. predetermined limits, vmeans for actuatingsaid feeding means only in response toitheI movement of said rack in one direction,

anda-brake mechanism associated-.With said.

spindle andfactuatedby said rack.

i 5. In; a; device for severing thin sheet-like material; the combination comprising a. spindle mounted. for carrying a roll: of the sheetlike material, meansfor intermittently feeding a predetermined length of saidmaterial,

a rack-ginember,.means for reciprocating` said withinipredeterminedf limits, means for actuating, said; .feeding means only in responseto the-movement of said rack in one direction,.a-roclc arm having one end thereof c ooperatingwith saidcspindleto exert a braking; effect, anda reciprocating' member co'- operating with thefother end of saidrock arm, said reciprocating member being actuated. by said rack.

Ima-devicefor severing-thin sheet-like material, the combination comprising: a; spin-A dlemenntedifoncarrying a roll of the sheetlilrematenial, means forintermittently feeding ;.a.predetermined\ length of said material,

ments,` means` for reciprocating saidv rack withinpredetermined limits, means for actuatingsaidgfeeding meansonly in response to the rm'ovementof said rack in one direction,

, and abrake-.meehanism' associated With said spindle andactuatedf to brakingv and nonbrakingfpositionsby said two spaced abutmentse f 7.. ,Ing adevice-for. severing thin sheet-like material, the combinationcomprising aA spindle: mountedy for carrying a roll of the sheetlike material, .means for. intermittently feedinga predetermined length of said material, a rackmember. carrying two spaced abutments,; means for reciprocating saidrack Within-predetermined limits, means for actuating said feeding means only in response to the movement'of said rack in one direction, a roclcarm having one-'end thereof cooperating thel other end beingadapted to beengaged by said two spaced abutments to actuate the rock arm ,to braking' and non-braking positions.

f, In. testimony whereof, I have a-iixed my signature to this specification.

v WALTER EGGER. 

